Which One of the Following Statements Concerning Diodes Is False

Which one of the following statements concerning diodes is false?

A) A diode is fabricated by forming junctions between one n-type and two p-type semiconductors or one p-type and two n-type semiconductors.
B) At an n-p junction in a diode that is not connected to a battery, an electric field exists across the junction.
C) A battery can be connected to a diode so that a continual flow of charge results.
D) A diode connected to an ac source allows current to flow only in one direction.
E) Holes move in a diode under a forward-bias condition.